Battery pack mounting structure

Abstract

The utility model provides a battery pack installation structure which comprises a shell and a bottom plate, a plurality of battery cells are installed in the shell, a cooling liquid circulation pipe is arranged below the shell in a winding mode, an avoiding groove is formed below the shell, a first cooling liquid circulation hole is formed in the cooling liquid circulation pipe, and the face, close to the shell, of the bottom plate is sunken to form a containing groove. A clamping groove structure is arranged below the bottom plate, the clamping groove structure penetrates through the bottom plate and is connected with the shell, an abutting plate and an extrusion plate are arranged on the two sides of the bottom plate correspondingly, and a buckle structure is slidably connected to the side, away from the extrusion plate, of the bottom plate; the clamping groove structure is connected with the extrusion plate and the bottom plate through the first connecting rod structure and the second connecting rod structure respectively, the clamping groove structure ascends to drive the second connecting rod structure to ascend, and the second connecting rod structure extrudes the buckle structure so that the buckle structure can be embedded into the insertion groove. And the structural stability of the battery pack mounting structure can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack installation structure. Background Art

[0002] Portable power tools can be applied to various scenarios in production and life. By configuring a rechargeable battery pack to supply power to the power tools, the power tools are freed from the restraint of wires, which makes it more convenient for users to use.

[0003] In the prior art, the battery pack is composed of multiple battery cells integrated in a housing. When the battery cells are working, they generate a large amount of heat and need to be cooled by cooling water flowing through the housing to improve energy efficiency. However, currently, the housing is usually installed on a bottom plate provided with a water flow groove, and the cooling water is injected into the water flow groove to cool the housing. This method has the following problems: 1. In order to make the housing have better load-bearing capacity and to make the fixation between the housing and the bottom plate more firm, the thickness of the lower plate of the housing is relatively thick to increase the action range of the fixing parts between the housing and the bottom plate, thereby improving the fixing effect. Due to the relatively thick lower plate of the housing, it is not conducive to the cooling water passing through the housing to cool the battery cells; 2. The connection method between the housing and the bottom plate is simple, and only the opposite surfaces are fixed. During use (such as when a vehicle is driving), due to bumps and vibrations, there is a risk that the fixing structure between the housing and the bottom plate may become loose. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a battery pack installation structure, aiming to solve the technical problems mentioned in the background art.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical solutions:

[0006] A battery pack mounting structure includes a housing and a bottom plate located below the housing. A plurality of battery cells are installed in the housing. A coolant circulation pipe is meanderingly arranged below the housing. An avoidance groove for avoiding the coolant circulation pipe is formed below the housing. A first coolant circulation hole is formed in the coolant circulation pipe. A receiving groove for receiving the coolant circulation pipe is recessed on one side of the bottom plate close to the housing. A clamping groove structure is provided below the bottom plate, and the clamping groove structure penetrates through the bottom plate and is connected to the housing. A pressing plate and a squeezing plate are respectively provided on both sides of the bottom plate. The squeezing plate is rotatably connected to the bottom plate. A clamping structure is slidably connected to one side of the bottom plate away from the squeezing plate. An insertion groove matching the clamping structure is provided on the coolant circulation pipe. The clamping structure is used to pass through the bottom plate and be connected to the insertion groove. The clamping groove structure is connected to the squeezing plate and the bottom plate through a first link structure and a second link structure respectively. Rotate the squeezing plate to contact the housing, the first link structure drives the clamping groove structure to rise, so that the clamping groove structure is connected to the housing. The rising of the clamping groove structure drives the second link structure to rise, and the second link structure squeezes the clamping structure, so that the clamping structure is embedded into the insertion groove.

[0007] According to one aspect of the above technical solution, the first coolant circulation hole has a water inlet hole and a water outlet hole. A liquid inlet and a liquid outlet are provided on the bottom plate. A first communication hole is provided between the liquid inlet and the water inlet hole. A second communication hole is provided between the liquid outlet and the water outlet hole.

[0008] According to one aspect of the above technical solution, the clamping groove structure includes a mounting plate and a plurality of insertion blocks provided on the mounting plate. The insertion blocks are arranged in cooperation with the avoidance groove. A plurality of first insertion holes are provided through the bottom plate corresponding to the positions of the plurality of insertion blocks. The insertion blocks are slidably connected to the hole walls of the first insertion holes. The insertion blocks are used to pass through the first insertion holes and be fitted with the avoidance groove.

[0009] According to one aspect of the above technical solution, the clamping structure includes a sliding plate connected to the bottom plate and an insertion rod provided on one side of the sliding plate close to the coolant circulation pipe. A second insertion hole for the insertion rod to pass through is provided on the bottom plate corresponding to the position of the insertion rod.

[0010] According to one aspect of the above technical solution, a first avoidance hole is formed in the squeezing plate. The first link structure includes a first hinge seat provided on the side surface of the mounting plate, a first rotating shaft provided on the first hinge seat, a second rotating shaft provided in the first avoidance hole, and a first link with both ends provided on the first rotating shaft and the second rotating shaft.

[0011] According to one aspect of the above technical solution, a second avoidance hole is formed in the bottom plate. The second link structure includes a second hinge seat provided on the side surface of the mounting plate, a third rotating shaft provided on the second hinge seat, a fourth rotating shaft provided in the second avoidance hole, and a second link with both ends provided on the third rotating shaft and the fourth rotating shaft. When the mounting plate rises, the end of the second link close to the mounting plate rises, and the second link presses the sliding plate, so that the sliding plate drives the insertion rod to be inserted into the insertion groove.

[0012] According to one aspect of the above technical solution, the housing includes two side walls arranged parallel to the coolant circulation pipe, and a second coolant circulation hole is meanderingly arranged in the side wall. Both ends of the second coolant circulation hole are communicated with the first coolant circulation hole.

[0013] According to one aspect of the above technical solution, a plurality of partition plates are provided in the housing. The arrangement direction of the partition plates is perpendicular to the arrangement direction of the coolant circulation pipe, and a third coolant circulation hole is meanderingly arranged in the partition plates. Both ends of the third coolant circulation hole are communicated with the first coolant circulation hole.

[0014] According to one aspect of the above technical solution, a cover plate is provided above the housing.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] By arranging a coolant circulation pipe below the housing, arranging a card slot structure below the bottom plate, arranging pressing plates and extrusion plates on both sides of the bottom plate, and arranging a buckle structure on one side of the bottom plate away from the extrusion plate, the arrangement of the coolant circulation pipe can make the lower plate of the housing thinner, thereby improving the heat exchange efficiency between the coolant and the battery cells and enhancing the battery efficiency. Due to the presence of the coolant circulation pipe, the lower plate of the housing is thinner. To improve the fixing effect between the housing and the bottom plate, the card slot structure can be inserted into the avoidance slot below the housing through the bottom plate, so that the card slot structure and the coolant circulation pipe are arranged in an embedded manner to fix the opposite side of the housing and the bottom plate. Then, the extrusion plate is made to contact the housing through the active extrusion plate, and the housing is extruded towards the pressing plate. The relative action between the extrusion plate and the pressing plate fixes the housing within a certain space to achieve secondary fixing. By inserting the buckle structure into the insertion slot on the coolant circulation pipe, the end of the housing away from the extrusion plate can be fixed to achieve tertiary fixing. Finally, the card slot structure and the extrusion plate are connected through the first link structure, and the card slot structure and the bottom plate are connected through the second link structure. After the housing is placed, the extrusion plate is rotated to first extrude the housing to the pressing plate to fix both sides of the housing. When the extrusion plate rotates, it will drive the card slot structure to rise through the first link structure, so that the card slot structure is embedded into the avoidance slot to fix the opposite side of the housing and the bottom plate. When the card slot structure rises, one end of the second link structure will rise, causing the second link structure to squeeze the buckle structure, so that the buckle structure is inserted into the avoidance slot to achieve the fixing of the coolant circulation pipe and the buckle structure. The three fixing methods interact with each other to prevent loosening at one place, which may lead to a reduction in the installation structure strength of the entire battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a front structural schematic diagram of the battery pack installation structure in an embodiment of the present invention;

[0018] Figure 2 FIG. 2 is a bottom structural schematic diagram of the battery pack installation structure in an embodiment of the present invention;

[0019] Figure 3 FIG. 3 Figure 1 is a front structural schematic diagram of the housing in FIG. 1;

[0020] Figure 4 FIG. 4 Figure 1 is a bottom structural schematic diagram of the housing in FIG. 1;

[0021] Figure 5 FIG. 5 Figure 1 is a front structural schematic diagram of the bottom plate in FIG. 1;

[0022] Figure 6 FIG. 6 Figure 2 is an exploded structural view of the bottom plate and the card slot structure in FIG. 1;

[0023] Figure 7 FIG. 7Figure 2 Exploded view of the structure of the middle bottom plate and the buckle structure;

[0024] Figure 8 For Figure 2 Schematic diagram of the structure at the first connecting rod structure in the middle;

[0025] Figure 9 For Figure 2 Schematic diagram of the structure at the second connecting rod structure in the middle;

[0026] Figure 10 Schematic cross-sectional view at the first coolant flow hole in the embodiment of the utility model;

[0027] Figure 11 Schematic cross-sectional view at the second coolant flow hole in the embodiment of the utility model;

[0028] Figure 12 Schematic cross-sectional view at the third coolant flow hole in the embodiment of the utility model; Description of main component symbols:

[0029]

[0030]

[0031] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific embodiments

[0032] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] Please refer to Figures 1 to 12 , which shows a battery pack installation structure in an embodiment of the present invention. It is characterized in that it includes a housing 20 and a bottom plate 10 located below the housing 20. A plurality of battery cells 21 are installed in the housing 20. A coolant circulation pipe 24 is meanderingly arranged below the housing 20. An avoidance groove 25 for avoiding the coolant circulation pipe 24 is formed below the housing 20. A first coolant circulation hole 80 is opened in the coolant circulation pipe 24. A receiving groove 15 for receiving the coolant circulation pipe 24 is recessed on a surface of the bottom plate 10 close to the housing 20. A card slot structure 40 is provided below the bottom plate 10. The card slot structure 40 penetrates through the bottom plate 10 and is connected to the housing 20. A pressing plate 31 and a squeezing plate 30 are respectively provided on both sides of the bottom plate 10. The squeezing plate 30 is rotatably connected to the bottom plate 10. A buckle structure 50 is slidably connected to a side of the bottom plate 10 away from the squeezing plate 30. An insertion slot 28 matching the buckle structure 50 is provided on the coolant circulation pipe 24. The buckle structure 50 is used to pass through the bottom plate 10 and be connected to the insertion slot 28. The card slot structure 40 is connected to the squeezing plate 30 and the bottom plate 10 through a first link structure 60 and a second link structure 70 respectively. Rotate the squeezing plate 30 to contact the housing 20. The first link structure 60 drives the card slot structure 40 to rise, so that the card slot structure 40 is connected to the housing 20. The rising of the card slot structure 40 drives the second link structure 70 to rise. The second link structure 70 squeezes the buckle structure 50, so that the buckle structure 50 is embedded in the insertion slot 28.

[0036] It can be understood that by arranging a coolant circulation pipe 24 below the housing 20, arranging a slot structure 40 below the bottom plate 10, arranging a pressing plate 31 and a squeezing plate 30 on both sides of the bottom plate 10, and arranging a buckle structure 50 on one side of the bottom plate 10 away from the squeezing plate 30, the arrangement of the coolant circulation pipe 24 can make the lower plate of the housing 20 thinner, thereby improving the heat exchange efficiency between the coolant and the battery cell 21 and improving the battery efficiency. Due to the presence of the coolant circulation pipe 24, the lower plate of the housing 20 is thinner. To improve the fixing effect between the housing 20 and the bottom plate 10, the slot structure 40 can penetrate the bottom plate 10 and be inserted into the avoidance slot 25 below the housing 20, so that the slot structure 40 and the coolant circulation pipe 24 are arranged in an embedded manner to fix the opposite surface of the housing 20 and the bottom plate 10. Then, the squeezing plate 30 is made to contact the housing 20 through the active squeezing plate 30, and the housing 20 is squeezed towards the pressing plate 31. The relative action between the squeezing plate 30 and the pressing plate 31 fixes the housing 20 in a certain space to achieve secondary fixing. By inserting the buckle structure 50 into the insertion slot 28 on the coolant circulation pipe 24, one end of the housing 20 away from the squeezing plate 30 can be fixed to achieve tertiary fixing. Finally, the slot structure 40 and the squeezing plate 30 are connected through the first link structure 60, and the slot structure 40 and the bottom plate 10 are connected through the second link structure 70. After the housing 20 is placed, the squeezing plate 30 is rotated to first squeeze the housing 20 to the pressing plate 31 to fix both sides of the housing 20. When the squeezing plate 30 rotates, it will drive the slot structure 40 to rise through the first link structure 60, so that the slot structure 40 is embedded into the avoidance slot 25 to fix the opposite surface of the housing 20 and the bottom plate 10. When the slot structure 40 rises, one end of the second link structure 70 will rise, so that the second link structure 70 squeezes the buckle structure 50 to make the buckle structure 50 insert into the avoidance slot 25 to achieve the fixing of the coolant circulation pipe 24 and the buckle structure 50. The three fixing methods interact with each other to prevent the loosening of one place from reducing the installation structure strength of the entire battery pack.

[0037] Further, the first coolant circulation hole 80 has a water inlet hole 26 and a water outlet hole 27. The bottom plate 10 is provided with a liquid inlet 11 and a liquid outlet 12. A first communication hole 16 is provided between the liquid inlet 11 and the water inlet hole 26, and a second communication hole 17 is provided between the liquid outlet 12 and the water outlet hole 27. In this embodiment, since both the liquid inlet 11 and the liquid outlet 12 are located on the left side, the water inlet hole 26 and the water outlet hole 27 are correspondingly located on the same side. The cooling water is input into the water inlet hole 26 through the first communication hole 16 through the liquid inlet 11, and the cooling water is returned to the liquid outlet 12 through the second communication hole 17 through the water outlet hole 27. The cooling water realizes heat exchange in the coolant communication pipe. The serpentine arrangement of the coolant communication pipe can make the heat exchange efficiency consistent at every place of the housing 20.

[0038] Further, the card slot structure 40 includes a mounting plate 41 and a plurality of insertion blocks 42 provided on the mounting plate 41. The insertion blocks 42 are cooperatively arranged with the avoidance slots 25. A plurality of first insertion holes 13 are formed through the bottom plate 10 at positions corresponding to the plurality of insertion blocks 42. The insertion blocks 42 are slidably connected to the inner walls of the first insertion holes 13. The insertion blocks 42 are used to pass through the first insertion holes 13 and fit into the avoidance slots 25. A first avoidance hole 61 is formed in the pressing plate 30. The first link structure 60 includes a first hinge seat 65 provided on the side surface of the mounting plate 41, a first rotating shaft 64 provided on the first hinge seat 65, a second rotating shaft 63 provided in the first avoidance hole 61, and a first link 62 with both ends provided on the first rotating shaft 64 and the second rotating shaft 63.

[0039] It can be understood that when the pressing plate 30 rotates upward to press the housing 20 (through the rotating rod 32), the first link 62 will pull the mounting plate 41 to rise, so that the insertion blocks 42 slide upward within the inner walls of the first insertion holes 13, and then are embedded into the avoidance slots 25 to achieve clamping and fixing. The function of the first avoidance hole 61 is to leave enough rotating space for the first link 62 when the first link 62 rotates.

[0040] Further, the buckle structure 50 includes a sliding plate 51 connected to the bottom plate 10 and an insertion rod 52 provided on one side of the sliding plate 51 close to the coolant flow pipe 24. The bottom plate 10 is provided with a second insertion hole 14 for the insertion rod 52 to pass through at a position corresponding to the insertion rod 52. A second avoidance hole 71 is formed in the bottom plate 10. The second link structure 70 includes a second hinge seat 73 provided on the side surface of the mounting plate 41, a third rotating shaft 74 provided on the second hinge seat 73, a fourth rotating shaft 76 provided in the second avoidance hole 71, and a second link 72 with both ends provided on the third rotating shaft 74 and the fourth rotating shaft 76. A sliding slot 75 is formed through one end of the second link 72 close to the third rotating shaft 74. The third rotating shaft 74 is slidably connected to the sliding slot 75. When the mounting plate 41 rises, the end of the second link 72 close to the mounting plate 41 is driven to rise. The second link 72 presses the sliding plate 51, so that the sliding plate 51 drives the insertion rod 52 to be embedded into the insertion slot 28.

[0041] It can be understood that when the mounting plate 41 rises, the third rotating shaft 74 will slide in the sliding slot 75, and then drive the end of the second link 72 close to the mounting plate 41 to move upward, so that the second link 72 presses the sliding plate 51. The sliding plate 51 drives the insertion rod 52 to penetrate through the second insertion hole 14 and be embedded into the insertion slot 28 to achieve the fixation of the coolant flow pipe 24 and the bottom plate 10. Triple fixation in multiple directions can make the battery pack mounting structure more stable.

[0042] Furthermore, the housing 20 includes two side walls 23 arranged parallel to the coolant flow pipe 24. Second coolant flow holes 82 are meanderingly arranged in the side walls 23. Both ends of the second coolant flow holes 82 are communicated with the first coolant flow holes 80. A cover plate is provided above the housing 20.

[0043] It can be understood that in the prior art, since the coolant tank is below the bottom plate 10, in order to make the fixing effect between the housing 20 and the bottom plate 10 better, the side walls 23 of the housing 20 also need to be fixed to the bottom plate 10. Therefore, the second coolant flow holes 82 cannot be formed in the side walls 23 of the housing 20. However, through the arrangement of the coolant flow pipe 24 in this application, there is no need to directly connect the housing 20 to the bottom plate 10. Therefore, the second coolant flow holes 82 can be arranged in the side walls 23. When the coolant flows through the first coolant flow holes 80, it will be split at the second coolant flow holes 82, so that heat exchange can also be realized at the side walls 23 of the battery cells 21. The coolant will re-enter the first coolant flow holes 80 from the second coolant flow holes 82.

[0044] Furthermore, a plurality of partition plates 22 are arranged in the housing 20. The arrangement direction of the partition plates 22 is perpendicular to the arrangement direction of the coolant flow pipe 24. Third coolant flow holes 81 are meanderingly arranged in the partition plates 22. Both ends of the third coolant flow holes 81 are communicated with the first coolant flow holes 80.

[0045] It can be understood that in addition to being split at the second coolant flow holes 82, the coolant will also be split in the third coolant flow holes 81, so that heat exchange can also be realized at the partition plates 22 of the battery cells 21.

[0046] In summary, the battery pack mounting structure in the above embodiments of the present utility model can improve the structural stability of the battery pack mounting structure while improving the heat exchange efficiency between the battery cells and the coolant.

[0047] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A battery pack mounting structure, characterized in that, It includes a housing and a bottom plate located below the housing. A plurality of battery cells are installed in the housing. A coolant circulation pipe is meanderingly arranged below the housing. An avoidance groove for avoiding the coolant circulation pipe is formed below the housing. A first coolant circulation hole is opened in the coolant circulation pipe. A receiving groove for receiving the coolant circulation pipe is recessed on one side of the bottom plate close to the housing. A card slot structure is provided below the bottom plate, and the card slot structure penetrates through the bottom plate and is connected to the housing. A pressing plate and a squeezing plate are respectively provided on both sides of the bottom plate. The squeezing plate is rotatably connected to the bottom plate. A buckle structure is slidably connected to one side of the bottom plate away from the squeezing plate. An insertion groove matching the buckle structure is provided on the coolant circulation pipe. The buckle structure is used to pass through the bottom plate and be connected to the insertion groove. The card slot structure is connected to the squeezing plate and the bottom plate through a first link structure and a second link structure respectively. Rotate the squeezing plate to contact the housing, and the first link structure drives the card slot structure to rise so that the card slot structure is connected to the housing. The rising of the card slot structure drives the second link structure to rise, and the second link structure squeezes the buckle structure so that the buckle structure is embedded into the insertion groove.

2. The battery pack mounting structure according to claim 1, wherein, The first coolant circulation hole has a water inlet hole and a water outlet hole. A liquid inlet and a liquid outlet are provided on the bottom plate. A first communication hole is provided between the liquid inlet and the water inlet hole. A second communication hole is provided between the liquid outlet and the water outlet hole.

3. The battery pack mounting structure according to claim 1, wherein The card slot structure includes a mounting plate and a plurality of insertion blocks provided on the mounting plate. The insertion blocks are arranged in cooperation with the avoidance groove. A plurality of first insertion holes are provided through the bottom plate at positions corresponding to the plurality of insertion blocks. The insertion blocks are slidably connected to the hole walls of the first insertion holes. The insertion blocks are used to pass through the first insertion holes and be engaged with the avoidance groove.

4. The battery pack mounting structure according to claim 3, wherein, The buckle structure includes a sliding plate connected to the bottom plate and an insertion rod provided on one side of the sliding plate close to the coolant circulation pipe. A second insertion hole for the insertion rod to pass through is provided on the bottom plate corresponding to the insertion rod.

5. The battery pack mounting structure according to claim 4, characterized in that, A first avoidance hole is opened on the squeezing plate. The first link structure includes a first hinge seat provided on the side of the mounting plate, a first rotating shaft provided on the first hinge seat, a second rotating shaft provided in the first avoidance hole, and a first link with both ends provided on the first rotating shaft and the second rotating shaft.

6. The battery pack mounting structure according to claim 5, wherein, A second avoidance hole is opened on the bottom plate. The second link structure includes a second hinge seat provided on the side of the mounting plate, a third rotating shaft provided on the second hinge seat, a fourth rotating shaft provided in the second avoidance hole, and a second link with both ends provided on the third rotating shaft and the fourth rotating shaft. A sliding groove is provided through one end of the second link close to the third rotating shaft. The third rotating shaft is slidably connected to the sliding groove. The rising of the mounting plate drives one end of the second link close to the mounting plate to rise, and the second link squeezes the sliding plate so that the sliding plate drives the insertion rod to be embedded into the insertion groove.

7. The battery pack mounting structure according to claim 1, wherein, The housing includes two side walls arranged parallel to the coolant flow pipe, and second coolant flow holes are meanderingly arranged in the side walls, and both ends of the second coolant flow holes are communicated with the first coolant flow holes.

8. The battery pack mounting structure according to claim 1, characterized in that, A plurality of partition plates are provided in the housing, the arrangement direction of the partition plates is perpendicular to the arrangement direction of the coolant flow pipe, and third coolant flow holes are meanderingly arranged in the partition plates, and both ends of the third coolant flow holes are communicated with the first coolant flow holes.

9. The battery pack mounting structure according to claim 1, wherein, A cover plate is provided above the housing.

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